Cookie bars are a type of dessert that combines the flavors and textures of cookies into a convenient, rectangular shape. They are typically made from a dough that includes ingredients like flour, sugar, butter, and eggs, similar to traditional cookies. The mixture is spread into a baking pan and baked until golden brown, resulting in a chewy and delicious treat. These bars can be customized with various add-ins, such as chocolate chips, nuts, or dried fruit, making them versatile for different tastes. Once cooled, they are cut into squares or rectangles, making them easy to serve and perfect for sharing at gatherings or as a snack.